(y-1)2=9

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Solution for (y-1)2=9 equation: 



(y-1)2=9

We move all terms to the left:

(y-1)2-(9)=0

We multiply parentheses

2y-2-9=0

We add all the numbers together, and all the variables

2y-11=0

We move all terms containing y to the left, all other terms to the right

2y=11

y=11/2

y=5+1/2

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